package com.example;

import java.util.*;

public class Test {
    public static void main(String[] args) {
//        String text = "a r b k c d se f g a d f s s f d s ft gh f ws w f v x s g h d h j j k f sd j e wed a d f";
        String text = "wangfeng wang p feng wang wang niu he ge p";
        List<String> list = new ArrayList<String>();
        list.addAll(Arrays.asList(text.split(" ")));
        Set<String> uniqueWords = new HashSet<String>(list);
        for (String word : uniqueWords) {
            System.out.println(word + ": " + Collections.frequency(list, word));
        }
    }
}
